Lebesgue measurable set and the complete and nowheredense set are two kinds of important set and are the important content in the real variable function.
勒贝格可测集和疏朗完备集是两类重要集合，是实变函数中的重要内容。
2
But the grave was nowhere to be found though I searched every nook and corner of the dense forest. Where was it gone?
但我已经走遍了这莽莽的松原，我的坟墓究竟往那儿去了呢？
3
But the grave was nowhere to be found though I searched every nook and corner of the dense forest. Where was it gone to?